Condensed Consolidated Statements of Operations and Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Interest and Dividend Income
Loans receivable, including loan fees	$ 115,822	$ 104,995	$ 230,712	$ 205,095
Investment securities	5,265	5,346	12,124	9,120
Federal Home Loan Bank stock	382	1,677	729	2,258
Deposits with banks	433	368	682	847
Total interest and dividend income	121,902	112,386	244,247	217,320
Interest Expense
Time deposits	10,619	9,122	21,476	17,914
Other deposits	3,931	3,019	7,571	5,793
Securities sold under agreements to repurchase	3,934	3,934	7,868	7,859
Advances from Federal Home Loan Bank	202	117	308	210
Long-term debt	1,440	1,440	2,880	2,864
Total interest expense	20,126	17,632	40,103	34,640
Net interest income before reversal for credit losses	101,776	94,754	204,144	182,680
Reversal for loan losses	(5,150)	(2,150)	(15,650)	(7,150)
Net interest income after reversal for credit losses	106,926	96,904	219,794	189,830
Non-Interest Income
Securities gains/(losses), net	1,655	(3,332)	1,449	(3,353)
Letters of credit commissions	1,205	1,391	2,486	2,659
Depository service fees	1,385	1,293	2,708	2,594
Other operating income	4,812	6,267	9,955	12,268
Total non-interest income	9,057	5,619	16,598	14,168
Non-Interest Expense
Salaries and employee benefits	21,501	24,463	48,432	47,079
Occupancy expense	4,484	3,986	8,853	8,007
Computer and equipment expense	2,443	2,292	5,023	4,794
Professional services expense	4,614	4,342	8,982	7,712
Data processing service expense	2,027	1,945	4,277	3,927
FDIC and State assessments	2,763	2,244	5,352	4,504
Marketing expense	1,002	1,321	1,798	2,141
Other real estate owned expense/(income)	493	(1,786)	788	(1,303)
Amortization of investments in low income housing and alternative energy partnerships	27,400	5,467	30,194	7,850
Amortization of core deposit intangibles	173	147	345	324
Other operating expense	1,979	3,164	6,406	6,681
Total non-interest expense	68,879	47,585	120,450	91,716
Income before income tax expense	47,104	54,938	115,942	112,282
Income tax expense	12,273	9,738	34,948	31,102
Net income	34,831	45,200	80,994	81,180
Other comprehensive income/(loss), net of tax
Unrealized holding gain/(loss) on securities available-for-sale	4,456	(6,395)	14,810	104
Less: reclassification adjustments included in net income	959	(1,931)	840	(1,943)
Unrealized holding (loss)/gain on cash flow hedge derivatives	(1,282)	2,328	(4,402)	740
Total other comprehensive gain/(loss), net of tax	2,215	(2,136)	9,568	2,787
Total comprehensive income	$ 37,046	$ 43,064	$ 90,562	$ 83,967
Net income per common share:
Basic (in dollars per share)	$ 0.44	$ 0.57	$ 1.02	$ 1.02
Diluted (in dollars per share)	0.44	0.56	1.01	1.01
Cash dividends paid per common share (in dollars per share)	$ 0.18	$ 0.14	$ 0.36	$ 0.24
Weighted-average shares:
Basic weighted-average number of common shares outstanding (in shares)	78,846,237	79,939,197	79,290,378	79,887,699
Diluted (in shares)	79,619,883	80,698,994	80,006,866	80,505,265